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Route Reliability

Philadelphia → Chicago

PHL–ORD · 678 miles · Philadelphia International Airport to Chicago O'Hare International Airport

62
A Little Dicey
WanderNerd Reliability Score
73%
Arrive within 15 minutes
19 min
Average arrival delay
3.1%
Cancelled
4,812
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines74%1,716 flights
  2. 2.American Airlines73%2,913 flights
  3. 3.Frontier Airlines58%183 flights

What the data says

Morning flights do better here.

PHL–ORD flights departing between 3–6 AM arrived on time 87% of the time, versus 55% between 6–9 PM.

Sunday scaries are real for this one.

PHL–ORD flights arrived on time 79% of the time on Wednesdays. On Sundays: 66%.

United Airlines has a clear lead on this route.

United Airlines arrived on time 74% of the time on this route; Frontier Airlines managed 58%.

Keep a backup plan handy.

This route was cancelled 3.1% of the time. Typical for U.S. flights is around 1–2%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon72%(680 flights)
  • Tue78%(666 flights)
  • Wed79%(654 flights)
  • Thu72%(673 flights)
  • Fri70%(698 flights)
  • Sat74%(571 flights)
  • Sun66%(698 flights)
On-time by departure window
  • 3–6 AM87%(45 flights)
  • 6–9 AM84%(1082 flights)
  • 9 AM–12 PM82%(883 flights)
  • 12–3 PM77%(874 flights)
  • 3–6 PM62%(952 flights)
  • 6–9 PM55%(589 flights)
  • 9 PM–12 AM62%(215 flights)
On-time trend by month
81%
May

Jun 65% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%380
July 202561%377
August 202568%423
September 202578%408
October 202575%438
November 202573%388
December 202566%337
January 202674%301
February 202683%327
March 202673%361
April 202678%416
May 202681%484

Same trip, other airports

Keep nerding

Based on 4,812 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.